In this letter, the strain field below uncapped Ge islands of a different shape on a Si(001) substrate is estimated by molecular dynamics simulations at a realistic scale. Comparison to the Fourier transform maps of transmission electron micrographs, recently reported in literature, shows a very good agreement. We point out that the complex deformation in silicon, just below the edges of the Ge islands, is far from being uniaxial. The stress distribution generated by such a strain determines the range of interdot repulsion. (C) 2002 American Institute of Physics.

Raiteri, P., Miglio, L., Valentinotti, F., Celino, M. (2002). Strain maps at the atomic scale below Ge pyramids and domes on a Si substrate. APPLIED PHYSICS LETTERS, 80(20), 3736-3738 [10.1063/1.1475775].

Strain maps at the atomic scale below Ge pyramids and domes on a Si substrate

MIGLIO, LEONIDA;
2002

Abstract

In this letter, the strain field below uncapped Ge islands of a different shape on a Si(001) substrate is estimated by molecular dynamics simulations at a realistic scale. Comparison to the Fourier transform maps of transmission electron micrographs, recently reported in literature, shows a very good agreement. We point out that the complex deformation in silicon, just below the edges of the Ge islands, is far from being uniaxial. The stress distribution generated by such a strain determines the range of interdot repulsion. (C) 2002 American Institute of Physics.
Articolo in rivista - Articolo scientifico
nanometric islands; elastic relaxation
English
20-mag-2002
80
20
3736
3738
none
Raiteri, P., Miglio, L., Valentinotti, F., Celino, M. (2002). Strain maps at the atomic scale below Ge pyramids and domes on a Si substrate. APPLIED PHYSICS LETTERS, 80(20), 3736-3738 [10.1063/1.1475775].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/6554
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